Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1981-05-05
1983-05-31
Michl, Paul R.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
5253316, C08F 822
Patent
active
043861890
ABSTRACT:
A simple and practical method for making post-chlorinated polymers based upon vinyl chloride is provided based upon conducting the chlorination reaction on a granular polymer suspended in aqueous hydrochloric acid in the presence of a stoichiometric excess of liquid chlorine and in the absence of any significant amount or organic solvent/swelling agent. Use of photo-radiation techniques is also avoided since the reaction is activated by means of a minor fraction of a percent based upon weight of said polymer of an organic peroxy compound which decomposes to form free radicals at the temperatures involved in the reaction.
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Ackerman Alfred J.
Lull David L.
Collins Arthur S.
Delaware City Plastics Corporation
Freer John J.
Michl Paul R.
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